U.S. patent application number 12/374780 was filed with the patent office on 2009-08-13 for method for providing a receiver's terminal with multimedia contents before a call is connected.
This patent application is currently assigned to SK TELECOM CO., LTD. Invention is credited to Seung-Ook Je, Jin-Hong Kim, Su-Nyeon Kim, Won-Jun Lee, Jae-Young Park.
Application Number | 20090203365 12/374780 |
Document ID | / |
Family ID | 39033241 |
Filed Date | 2009-08-13 |
United States Patent
Application |
20090203365 |
Kind Code |
A1 |
Lee; Won-Jun ; et
al. |
August 13, 2009 |
METHOD FOR PROVIDING A RECEIVER'S TERMINAL WITH MULTIMEDIA CONTENTS
BEFORE A CALL IS CONNECTED
Abstract
Disclosed is a method for providing a target mobile station with
a multimedia content such as audio or video content before a call
an originating mobile station attempted to connect is answered by
the target mobile station. A mobile communication network protocol
for multimedia transmission between a target mobile station and a
network is established before a called party receives a call, so
that multimedia such as images or moving pictures may be sent to
the target mobile station before the called party answers the call.
In this way, the called party is able to enjoy a multimedia service
before the phone call is connected. Moreover, if the multimedia is
an audio or moving picture about a calling party, the called party
can identify the calling party based on the multimedia.
Inventors: |
Lee; Won-Jun; (Seoul,
KR) ; Je; Seung-Ook; (Seoul, KR) ; Kim;
Su-Nyeon; (Gyeonggi-do, KR) ; Park; Jae-Young;
(Seoul, KR) ; Kim; Jin-Hong; (Seoul, KR) |
Correspondence
Address: |
LOWE HAUPTMAN HAM & BERNER, LLP
1700 DIAGONAL ROAD, SUITE 300
ALEXANDRIA
VA
22314
US
|
Assignee: |
SK TELECOM CO., LTD
Seoul
KR
|
Family ID: |
39033241 |
Appl. No.: |
12/374780 |
Filed: |
August 9, 2007 |
PCT Filed: |
August 9, 2007 |
PCT NO: |
PCT/KR07/03825 |
371 Date: |
January 22, 2009 |
Current U.S.
Class: |
455/414.1 |
Current CPC
Class: |
H04W 76/15 20180201;
H04L 65/1009 20130101; H04L 65/1069 20130101 |
Class at
Publication: |
455/414.1 |
International
Class: |
H04M 3/42 20060101
H04M003/42 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 9, 2006 |
KR |
10-2006-0075043 |
Claims
1-22. (canceled)
23. A method for providing a target mobile station with a
multimedia content before the target mobile station answering a
call requested from an originating mobile station over a mobile
communication system, the method comprising the steps of: (a)
receiving a call request from the originating mobile station; (b)
paging the target mobile station and sending an incoming setup
message to the target mobile station; (c) establishing a channel
for multimedia transmission to the target mobile station; (d)
providing the target mobile station with the multimedia content
through the channel for multimedia transmission; (e) receiving a
call answer from the target mobile station, and releasing the
channel for multimedia transmission; and (f) connecting the call
between the target mobile station and the originating mobile
station.
24. The method of claim 23, wherein the incoming setup message in
the step (b) includes a command for initiating a protocol to
establish the channel for multimedia transmission between the
target mobile station and a target mobile switching center.
25. The method of claim 24, wherein the command for initiating the
protocol includes an information for identifying the protocol to
establish the channel for multimedia transmission.
26. The method of claim 25, wherein the protocol to establish the
channel for multimedia transmission is 3G.324M.
27. The method of claim 23, further comprising the step of (g)
establishing a channel for video call between the target mobile
station and the originating mobile station using 3G.324M protocol,
following the step (f).
28. The method of claim 23, wherein the multimedia content includes
any of audio data, video data, and image data.
29. The method of claim 23, wherein the step (c) comprises
establishing the channel for multimedia transmission between a
target mobile switching center and the target mobile station.
30. The method of claim 23, wherein the step (c) comprises
establishing the channel for multimedia transmission between an
Intelligent Peripheral (IP) and the target mobile station via a
target mobile switching center, and wherein the multimedia content
is stored in the IP.
31. The method of claim 30, further comprising the step of (h)
identifying the multimedia content to provide to the target mobile
station by receiving the identification number of the originating
mobile station from the target mobile switching center between the
step (a) and the step (c).
32. A mobile communication system for providing a target mobile
station with a multimedia content before the target mobile station
answering a call requested from an originating mobile station, the
system comprising: a target mobile switching center which receives
a call request from the originating mobile station and pages the
target mobile station; and a media IP which stores the multimedia
content to provide to the target mobile station and operates in
cooperation with the target mobile switching center, wherein the
target mobile switching center sends an incoming setup message to
the target mobile station, the incoming setup message including a
command for initiating a protocol to establish a channel for
multimedia transmission, and wherein the media IP receives the
identification number of the originating mobile station from the
target mobile switching center, and establishes the channel for
multimedia transmission to the target mobile station via the target
mobile switching center so as to provide the target mobile station
with the multimedia content before the target mobile station
answers to the call.
33. The mobile communication system of claim 32, wherein the
command for initiating the protocol includes an information for
identifying the protocol to establish the channel for multimedia
transmission.
34. The mobile communication system of claim 33, wherein the
protocol to establish the channel for multimedia transmission is
3G.324M.
35. The mobile communication system of claim 32, wherein the target
mobile switching center releases the channel for multimedia
transmission when receives a call answer from the target mobile
station, and connecting the call between the target mobile station
and the originating mobile station.
36. A mobile switching center for providing a target mobile station
with a multimedia content before the target mobile station
answering a call requested from an originating mobile station, the
mobile switching center conducting the steps of: (a) receiving a
call request from the originating mobile station; (b) paging the
target mobile station and sending an incoming setup message to the
target mobile station; (c) establishing a channel for multimedia
transmission to the target mobile station; (d) providing the target
mobile station with the multimedia content through the channel for
multimedia transmission; (e) receiving a call answer from the
target mobile station, and releasing the channel for multimedia
transmission; and (f) connecting the call between the target mobile
station and the originating mobile station.
37. The mobile switching center of claim 36, wherein the incoming
setup message in the step (b) includes a command for initiating a
protocol to establish the channel for multimedia transmission to
the target mobile station.
38. The mobile switching center of claim 37, wherein the command
for initiating the protocol includes an information for identifying
the protocol to establish the channel for multimedia
transmission.
39. The mobile switching center of claim 38, wherein the protocol
to establish the channel for multimedia transmission is
3G.324M.
40. The mobile switching center of claim 37, further conducting the
step of (g) establishing a channel for video call between the
target mobile station and the originating mobile station using
3G.324M protocol, following the step (f).
41. A mobile communication terminal for receiving a multimedia
content from a mobile communication system before a call which an
originating mobile station requested is connected, the terminal
conducting the steps of: (a) receiving a paging and responding to
the paging; (b) receiving an incoming setup message including a
command for initiating a protocol to establish a channel for
multimedia transmission; (c) establishing the channel for
multimedia transmission to the mobile communication system, in
response to the command for initiating the protocol; (d) receiving
the multimedia content through the channel for multimedia
transmission; and (e) answering the call which the originating
mobile station requested, and releasing the channel for multimedia
transmission.
42. The mobile communication terminal of claim 41, wherein the
command for initiating the protocol includes an information for
identifying the protocol to establish the channel for multimedia
transmission.
43. The mobile communication terminal of claim 42, wherein the
protocol to establish the channel for multimedia transmission is
3G.324M.
44. The mobile communication terminal of claim 41, further
conducting the step of (f) establishing a channel for video call to
the originating mobile station using 3G.324M protocol, when the
call is connected.
45. A method for receiving a multimedia content from a mobile
communication system before a call which an originating mobile
station requested is connected, the method comprising the steps of:
(a) receiving a paging and responding to the paging; (b) receiving
an incoming setup message including a command for initiating a
protocol to establish a channel for multimedia transmission; (c)
establishing the channel for multimedia transmission to the mobile
communication system, in response to the command for initiating the
protocol; (d) receiving the multimedia content through the channel
for multimedia transmission; and (e) answering the call which the
originating mobile station requested, and releasing the channel for
multimedia transmission.
46. The method of claim 45, wherein the command for initiating the
protocol includes an information for identifying the protocol to
establish the channel for multimedia transmission.
47. The method of claim 46, wherein the protocol to establish the
channel for multimedia transmission is 3G.324M.
48. The method of claim 45, further comprising the step of (f)
establishing a channel for video call to the originating mobile
station using 3G.324M protocol, when the call is connected.
Description
TECHNICAL FIELD
[0001] The present invention relates to a method for providing a
target mobile station, or a receiver's terminal, with multimedia
contents such as audio or video content before the target mobile
station answering a call requested from an originating mobile
station in a mobile network.
BACKGROUND ART
[0002] FIG. 1 is a flow chart illustrating a conventional call
processing for providing a video call over WCDMA based mobile
communication network using the 3G.324M protocol.
[0003] When an Originating Mobile Station, MS.sub.O 10, makes a
video call to a Target Mobile Station, MS.sub.T 50, a Setup message
for call origination to enable the video call using the 3G.324M
protocol is sent from the MS.sub.O 10 to an Originating Mobile
Switching Center, MSC.sub.O 20 (S110). Within the Setup message, an
Information Transfer Capability (ITC) value of the call is set to
Unrestricted Digital Information (UDI) so as to enable the transfer
of digital data, and an Other Rate Adaptation (ORA) field is set to
the 3G.324M protocol. The 3G.324M protocol comprises H.223
protocol, a standard for multiplexing multimedia data, and H.245
protocol, a standard for system control.
[0004] Next, the MSC.sub.O 20 replies to the MS.sub.O 10 with a
Call Proceeding message informing that it will proceed with the
call (S112).
[0005] Moreover, in order to get the location information of the
MS.sub.T 50 and connect the call thereto, the MSC.sub.O 20 sends a
Send Routing Information (SRI) request to a home location register
(HLR) 30 (S120).
[0006] In response to the SRI request, the HLR 30 sends a Provide
Roaming Number (PRN) request to a Target Mobile Switching Center,
MSC.sub.T 40, which the MS.sub.T 50 is connected to (S122).
[0007] As a response to the PRN request, the MSC.sub.T 40 transmits
PRN information to the HLR 30 (S124). And as a response to the SRI
request, the HLR 30 transmits SRI information, which is acquired
from the PRN information, to the MSC.sub.O 20 (S126).
[0008] Then, the MSC.sub.O 20 finds out the location of the
MS.sub.T 50 through the SRI information and transmits an initial
address message (IAM) including ID information of the MS.sub.T,
such as a telephone number, to the MSC.sub.T 40 which the MS.sub.T
50 is connected to (S130). The IAM message requests the MSC.sub.T
40 to establish a circuit connection to reach the MS.sub.T 50.
[0009] Next, the MSC.sub.T 40 sends a Paging message to the
MS.sub.T 50 in accordance with the IAM (S150), and the MS.sub.T 50
sends a Paging Response to the MSC.sub.T 40 (S152).
[0010] Afterwards, the MSC.sub.T 40 sends a Setup message to the
MS.sub.T 50 (S160), and the MS.sub.T 50 sends the MSC.sub.T 40 a
Call Confirmed message as a response (S162), followed by an Alert
message (S170). In this manner, a traffic channel is established
between the MS.sub.T 50 and MSC.sub.T 40.
[0011] Meanwhile, in response to the IAM message, the MSC.sub.T 40
sends the MSC.sub.O 20 an address complete message (ACM) indicating
the acquisition of the MS.sub.T ID (S178), and the MSC.sub.O 20
sends the MS.sub.O 10 an Alert message for informing such
(S179).
[0012] When the MS.sub.T 50 answers or receives the call in
response to a call-incoming or ringing, it delivers a Connect
message to the MSC.sub.T 40 (S180), and receives a Connect Ack
message (S182).
[0013] In the meanwhile, after receiving the Connect message from
the MS.sub.T 50, the MSC.sub.T 40 transmits an answer message (ANM)
to the MSC.sub.O 20 (S184). Then, the MSC.sub.O 20 sends a Connect
message to the MS.sub.O 10 (S186) and receives a Connect Ack
message (S188).
[0014] In this manner, a call is connected between the MS.sub.O 10
and the MS.sub.T 50, and then a negotiation for video and audio
channel setup and the like according to the H.245 protocol is made
(S190), and audio and video data are transmitted by the H.223
protocol (S192).
[0015] However, in mobile communication services using the above
way, an audio or video multimedia signal can only be sent to the
called party, MS.sub.T 50, after the traffic channel is built
between the MS.sub.O 10 and the MS.sub.T 50 (S170 through S179) and
the called party receives the call (S180).
[0016] In other words, the conventional technology is not able to
provide multimedia service while the MS.sub.T is still ringing.
DISCLOSURE OF INVENTION
Technical Problem
[0017] In the present invention, a mobile communication network
protocol is established for multimedia transmission between a
target mobile station and a network before a called party receives
or answers a call, so that multimedia such as images or moving
pictures may be sent to the target mobile station before the called
party answers the call.
[0018] In this way, the called party is able to enjoy a multimedia
service before the call is connected. Particularly, if the
multimedia is an audio or moving picture related with a calling
party, the called party can identify the calling party based on the
multimedia.
[0019] Accordingly, the object of the invention is to provide a
method for providing a target mobile station with multimedia
contents before a call is connected over a mobile communication
network.
Technical Solution
[0020] The present invention is related to a method for providing a
target mobile station with multimedia contents such as audio or
video content while the target mobile is still ringing, i.e.,
before a call that an originating mobile station requested to
connect is answered by the target mobile station.
[0021] In the invention, the multimedia contents may be multimedia
data incorporating audio and video, or multimedia data formed of
audio or video only. The multimedia contents provided according to
the invention is preset by a calling party and is stored in a
mobile switching center of a mobile communication operator, a media
IP (Intelligent Peripheral), or a subscriber server.
[0022] In detail, a method for providing a target mobile station
with multimedia contents according to the invention comprises the
steps of: (a) when the call is requested from the originating
mobile station, an originating mobile switching center sending an
initial address message (IAM) containing ID information of the
target mobile station to a target mobile switching center; (b) the
target mobile switching center sending a setup message to the
target mobile station; (c) establishing a channel for multimedia
transmission between the target mobile station and the target
mobile switching center, in response to a command of the setup
message; and (d) providing multimedia data stored in the target
mobile switching center to the target mobile station.
[0023] Alternatively, multimedia contents being saved in a
subscriber server, not in a switching center, may be provided to a
target mobile station through media IP (Intelligent Peripheral). In
such case, a method for providing a target mobile station with
multimedia contents according to the invention comprises the steps
of: (a) when the call is requested from the originating mobile
station, an originating mobile switching center sending an initial
address message (IAM) containing ID information of the target
mobile station to a target mobile switching center; (b) the target
mobile switching center sending a setup message to the target
mobile station; (c) according to a command of the setup message,
establishing a channel for multimedia transmission, between the
target mobile station and the target mobile switching center, and
between the target mobile switching center and a media IP
(Intelligent Peripheral); and (d) the media IP providing the target
mobile station with multimedia data.
[0024] In addition, the present invention provides a mobile
communication system that uses a mobile communication protocol
enabling multimedia transmission and provides a target mobile
station with multimedia contents before a call an originating
mobile station having attempted to connect is answered by the
target mobile station. To this end, the system comprises: a media
IP storing the multimedia content to be provided to the target
mobile station and operating in cooperation with the target mobile
switching center, wherein, before the call requested from the
originating mobile station answered, a channel for multimedia
transmission is established, between the media IP and the target
mobile switching center, and between the target mobile switching
center and the target mobile station, so as to provide multimedia
content stored in the media IP to the target mobile station via the
target mobile switching center.
ADVANTAGEOUS EFFECTS
[0025] According to the invention, a mobile communication network
protocol is established for multimedia transmission between a
target mobile station and a network before a called party receives
a call, so that multimedia such as images or moving pictures may be
sent to the target mobile station before the called party answers
the call. In this way, the called party is able to enjoy a
multimedia service before the phone call is connected.
Particularly, if the multimedia is an audio or moving picture about
a calling party, the called party can identify the calling party
based on the multimedia.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The above and other objects and features of the present
invention will become apparent from the following description of
preferred embodiments, given in conjunction with the accompanying
drawings, in which:
[0027] FIG. 1 is a flow chart illustrating a conventional call
processing for providing a video call in a WCDMA based mobile
communication network.
[0028] FIG. 2 is a flow chart illustrating a process for providing
multimedia contents when an incoming video call is in queue before
being answered, according to a first embodiment of the
invention.
[0029] FIG. 3 is a flow chart illustrating a process for providing
multimedia contents when an incoming video call is in queue before
being answered, according to a second embodiment of the
invention.
[0030] FIG. 4 shows the configuration of a communication system for
use in the second embodiment of the invention where multimedia
contents are provided when an incoming video call is in queue
before being answered.
[0031] FIG. 5 shows the configuration of a communication system
used for providing multimedia contents when an incoming call over
an IP (Internet Protocol) network is in queue before being
answered, according to a third embodiment of the invention.
[0032] FIG. 6 is a flow chart illustrating a process of providing
multimedia contents when an incoming call over an IP network is in
queue before being answered, which is applied to the third
embodiment of the invention.
MODE FOR THE INVENTION
[0033] Hereinafter, preferred embodiments of the present invention
will be described in detail with reference to the accompanying
drawings. However, the present invention is not limited by the
following embodiments.
[0034] The first and the second embodiments described below are
exemplary call processing methods applied to a third generation
mobile communication network based on WCDMA system using the
3G.324M protocol. The third embodiment described below is an
exemplary call processing in a wireless packet network such as
Internet Protocol network.
[0035] FIG. 2 is a flow chart illustrating a process for providing
multimedia contents before an incoming video call is answered,
according to a first embodiment of the invention.
[0036] The call processing shown in FIG. 2 is partly identical with
the aforementioned conventional call processing for providing a
video call over WCDMA based mobile communication network using the
3G.324M protocol. For example, at the step S210, an MS.sub.O 10
transmits to an MS.sub.T 50 a Setup message for initiating a video
call using the 3G.324M protocol. At step S250, an MSC.sub.T 40
sends a Paging message to the MS.sub.T 50 in response to receiving
the IAM, and at step S252, the MS.sub.T 50 sends a Paging Response
to the MSC.sub.T 40 in response to the Paging. As such, the steps
from S210 to S252 are identical to the aforementioned conventional
call processing and will not be further explained hereafter.
[0037] After the MS.sub.T 50 sends the Paging Response (S252) to
the MSC.sub.T 40 in response to the Paging, the MSC.sub.T 40
delivers a Setup message for call termination to the MS.sub.T 50
(S260). The Setup message used here includes a ProgressIndicator
parameter, which is set to Request 3G.324M Initiation to initiate
the 3G.324M protocol for a video call. That is, the MSC.sub.T 40
sends 3G.324M initiation command to the MS.sub.T 50 through the
value of the ProgressIndicator parameter included in the Setup
message, so as to enable H.245 negotiation to initiate immediately
once a traffic channel to the MS.sub.T 50 is established.
[0038] The MS.sub.T 50 sends the MSC.sub.T 40 a Call Confirmed
message (S262) and an Alert message (S270). And, in accordance with
the 3G.324M initiation command, the MS.sub.T 50 attempts H.245
protocol setup and a channel based on the H.245 protocol is
established between the MSC.sub.T 40 and MS.sub.T 50 (S274). Then,
conforming to the H.223 protocol, the MSC.sub.T 40 provides,
through the channel, the MS.sub.T 50 with default multimedia data
or multimedia content a calling party has set in advance as early
media (S276).
[0039] Therefore, video data such as a still image or moving image
can be displayed on the MS.sub.T 50 while the MS.sub.T 50 is still
ringing. Also, the MS.sub.T 50 may output multimedia data of a
specific audio, instead of a basic ring-tone.
[0040] Meanwhile, the MSC.sub.T 40 sends the MSC.sub.O 20 an
address complete message (ACM) indicating the ID of the MS.sub.T
has been obtained (S278), and the MSC.sub.O 20 transmits an Alert
message to the MS.sub.O 10 for informing such (S279).
[0041] After receiving or answering the incoming call, the MS.sub.T
50 transmits a Connect message to the MSC.sub.T 40 (S280) and
receives a Connect Ack (S282).
[0042] In the meantime, after receiving the Connect message from
the MS.sub.T 50, the MSC.sub.T 40 sends an answer message (ANM) to
the MSC.sub.O 20 (S284), and then the MSC.sub.O 20 sends a Connect
message to the MS.sub.O 10 (S286) and receives a Connect Ack
(S288).
[0043] Once a call is connected between the MS.sub.O 10 and the
MS.sub.T 50 as above, the channel for 3G.324M established between
the MSC.sub.T 40 and the MS.sub.T 50 is released (S289).
Afterwards, a negotiation for establishing audio and video
communication channel(s) according to the H.245 protocol is
performed between the MS.sub.O 10 and the MS.sub.T 50 (S290).
Finally, audio and video data for the video call are transmitted
using H.223 protocol, thereby the video call is enabled (S292).
[0044] FIG. 3 is a flow chart illustrating a process for providing
multimedia contents when an incoming video call is in queue before
being answered, according to a second embodiment of the invention,
and FIG. 4 shows the configuration of a communication system used
in such case.
[0045] This embodiment differs from the first embodiment in that a
media IP 60 and a subscriber server 65 are provided and that the
3G.324M protocol is established between the media IP 60 and a
MS.sub.T 50. Moreover, the subscriber server 65 stores ID
information of multimedia content(s), e.g., media code, which an
MS.sub.O user has set, and provides the media code to the media IP
60 in response to a query from it. Then the media IP 60 provides
the MS.sub.T 50 with multimedia contents corresponding to the
code.
[0046] The call processing shown in FIG. 3 is partly identical with
the aforementioned conventional call processing shown in FIG. 1 for
providing a video call over the third generation mobile
communication network using the 3G.324M protocol. For example, the
processing from step S310, where an MS.sub.O 10 sends an MSC.sub.O
20 a call setup message for establishing the 3G.324M protocol to
enable a video call, to step S330, where the MSC.sub.O 20 sends an
IAM message to an MSC.sub.T 40 are identical with the
aforementioned conventional call processing. Therefore, these steps
will not be further explained hereafter.
[0047] Meanwhile, at step S320, an O_SFI (Originating_Service
Features Indicator) parameter contained in a SRI Request is a
parameter that may be used to inform the termination-side network
of an originating subscriber's service, so that a processing to
provide a called party with a multimedia service may proceed. In
case that a subscriber having his or her O_SFI set in VLR (Visitor
Location Register) makes an outgoing call, i.e., call origination,
the MSC.sub.O 20 transmits a SRI Request including the O_SFI to
HLR. As such, a second SRI Request sent under CFU (Call Forwarding
Unconditional) service, where all incoming calls are forwarded
unconditionally, may contain the O_SFI parameter.
[0048] The MSC.sub.O 20 transmits an IAM message to the MSC.sub.T
40 (S330). Here, depending on a video call attempt, the IAM message
may include a TMR (Transmission Medium Requirement) parameter
specified as 64 kbps, unstructured, and an O_SFI parameter defined
to "MultiRing" for identifying an early media service of the
invention. In response to the IAM message, the MSC.sub.T 40 sends
the media IP 60 an IAM including ID information of the MS to which
multimedia data needs to be provided (S340).
[0049] The media IP 60 sends the MSC.sub.T 40 an address complete
message (ACM) indicating the acquisition of MS.sub.T ID (S342),
requests to the subscriber server 65 for a media code having been
registered by the calling party, the subscriber of the MS.sub.O 10,
and receives the media code from the subscriber server 65 (S348).
Here, the media code means an identifier of multimedia contents to
be transmitted to the MS.sub.T 50.
[0050] Next, the MSC.sub.T 40 sends a Paging message to the
MS.sub.T 50 according to the IAM from MSC.sub.O (S350), and the
MS.sub.T 50 sends a Paging Response to the MSC.sub.T 40 (S352).
[0051] Afterwards, the MSC.sub.T 40 sends an incoming Setup message
to the MS.sub.T 50 (S360). Again, the incoming Setup message used
here includes a ProgressIndicator parameter specified as Request
3G.324M Initiation, which commands to initiate the 3G.324M protocol
for a video call.
[0052] The MS.sub.T 50 sends the MSC.sub.T 40 a Call Confirmed
message (S362) and an Alert message (S370). In addition, the
MS.sub.T 50 attempts to establish the H.245 protocol in response to
the request for 3G.324M Initiation included in the
ProgressIndicator parameter, then a channel based on the H.245
protocol is established between the media IP 60 and MS.sub.T 50
(S374 and S375). Then, based on the H.223 protocol, data
transmission/receiving through the channel is achieved between the
media IP 60 and the MS.sub.T 50 via the MSC.sub.T 40 (S376 and
S377). In this manner, contents having been stored in the media IP
50 are provided to the MS.sub.T 50 through the MSC.sub.T 40.
[0053] Meanwhile, the MSC.sub.T 40 sends the MSC.sub.O 20 an
address complete message (ACM) indicating the acquisition of
MS.sub.T ID (S378), and the MSC.sub.O 20 transmits an Alert message
to the MS.sub.O 10 for informing such (S379).
[0054] When answering or receiving the call, the MS.sub.T 50
transmits a Connect message to the MSC.sub.T 40 (S380) and receives
a Connect Ack (S382).
[0055] After receiving the Connect message from the MS.sub.T 50,
the MSC.sub.T 40 sends an answer message (ANM) to the MSC.sub.O 20
(S384), then the MSC.sub.O 20 sends a Connect message to the
MS.sub.O 10 (S386) and receives a Connect Ack (S388).
[0056] In the mean while, when the MS.sub.T 50 answers the call by
sending the Connect message at step 380, the 3G.324M channel
established between the MSC.sub.T 40 and the MS.sub.T 50 is
released (S389-1). In addition, after delivering a circuit release
request (REL) message to the media IP 60 (S389-2), the MSC.sub.T 40
receives a reply (RLC) message from the media IP 60 (S389-3), and
the channel established between the MSC 40 and the media IP 60 is
released.
[0057] Moreover, once a call is connected between the MS.sub.O 10
and the MS.sub.T 50 (S380-S388), a negotiation on audio and video
communication channel setup according to the H.245 protocol is made
between the MS.sub.O 10 and the MS.sub.T 50 (S390), then audio and
video data for the video call are transmitted using H.223 protocol
(S392).
[0058] In this embodiment, the MSC.sub.T 40 may include the
ProgressIndicator field requesting the initiation of 3G.324M
protocol in the Setup message of step S360, according to the
multi-ring service request of the O_SFI parameter either in the PRN
Request message or in the IAM message of step S340. Moreover, the
MSC.sub.T 40 may store O_SFI information in VLR, when the messages
received include such information.
[0059] As such, to provide multimedia contents in cooperation with
an external device such as the media IP 60, the MSC.sub.T 40, along
with the media IP 60, should have an interface for connecting or
linking each other. For instance, a communication channel may be
established by delivering the IAM message to the media IP 60
allocated to routing digits (S340-S342). Specifically, a
CallingPartyNumber parameter value of the IAM message may be set to
`3G IP RoutingDigits+originating MSISDN` (S340).
[0060] In this embodiment, it was assumed that the media IP 60
stores a sound source of multimedia to be provided to a called
party. However, if a content corresponding to a specific media
code, i.e., a code for identifying sound source, is not stored in
the media server, the media IP 60 may request to a separate content
server for a corresponding content, and transmit the content to the
MS.sub.T 50.
[0061] The terminal of the invention is assumed to be able to
process a ProgressIndicator parameter value in the incoming Setup
message. In other words, when the incoming Setup message includes
the ProgressIndicator parameter and the parameter value turns out
to be a Request 3G.324M initiation, the terminal should attempt to
establish a channel according to the H.245 protocol. Moreover, in
case of receiving an incoming call, the MS.sub.T must send a
Connect message and establish a H.245 protocol based channel to the
MS.sub.O.
[0062] In relation with the media IP 60, after a channel is
allocated between the MSC.sub.T 40 and the media IP 60 of the
invention (S340-S342), a 3G.324M protocol based channel is
established between the media IP 60 and the MS.sub.T 50 through the
MSC.sub.T 40 (S374-S375).
[0063] HLR in the invention sets a multi-ring field value of O_SFI,
depending on whether a calling party has subscribed or unsubscribed
the multimedia service for providing the MS.sub.T with multimedia
data.
[0064] FIG. 5 shows the configuration of a communication system
used for providing multimedia contents when an incoming call over
an IP network is in queue before being answered, according to a
third embodiment of the invention.
[0065] This embodiment differs from the first embodiment in that an
MS.sub.T 50 is connected to a wireless packet network (IP network),
so multimedia contents are transmitted to the MS.sub.T over the
wireless packet network.
[0066] To be more specific, the MS.sub.T 50 is connected to the
wireless packet network through an access point (AP) 45 connecting
a wireless network with a wired network, and an access point
controller (APC) 43 controlling the packet communication. Also, the
MS is connected with an MSC.sub.T 40 through gateway (G/W) of the
APC 43 based on session initiation protocol (SIP) to set a call. In
this manner, audio communication and/or data communication is
performed between the MS.sub.O 10, connected to a mobile
communication network, and the MS.sub.T.
[0067] FIG. 6 is a flow chart illustrating a process of providing
multimedia contents in use of the communication system described
above when an incoming call over an IP network is in queue before
being answered.
[0068] The call processing shown in FIG. 6 is partly identical with
the conventional call processing for providing a call over an
existing mobile communication network. For example, the processing
from step S610, where an MS.sub.T 10 sends an MSC.sub.O 20 a call
setup message for enabling a video call, to step S630, where the
MSC.sub.O 20 acquires routing information and sends an IAM message
to an MSC.sub.T 40 are identical with the aforementioned call
processing. Therefore, these steps will not be further explained
hereafter.
[0069] After the MSC.sub.O 20 transmits an IAM message to the
MSC.sub.T 40 (S630), the MSC.sub.T 40 sends an APC 45 a Paging
message for the MS.sub.T 50 (S650), and the APC 45 sends the
MS.sub.T 50 an SIP Invite Request Message informing an incoming
call (S651). Then, the MS.sub.T 50 sends the APC 45 an SIP
Confirmed message permitting a call connection (S652), and the APC
45 sends a Paging Response to the MSC.sub.T 40 as a response to the
Paging request (S653).
[0070] When the MS.sub.T 50 connects to a wireless packet network
through the processing described above, multimedia data
pre-registered by the calling party, the user of the MS.sub.O, is
provided from the MSC.sub.T 40 or the media IP (not shown) to the
MS.sub.T 50 over the wireless packet network (S676).
[0071] In the meantime, the MSC.sub.T 40 sends an address complete
message (ACM) notifying the acquisition of the MS.sub.T ID to the
MSC.sub.O 20 (S678), and the MSC.sub.O 20 sends the MS.sub.O 10 an
Alert message informing such (S679).
[0072] When the MS.sub.T 50 receives the call in response to call
incoming, it delivers a Connect message to the MSC.sub.T 40 (S680),
and receives a Connect Ack message (S682).
[0073] Meanwhile, after receiving the Connect message from the
MS.sub.T 50, the MSC.sub.T 40 transmits an answer message (ANM) to
the MSC.sub.O 20 (S684). Then, the MSC.sub.O 20 sends a Connect
message to the MS.sub.O 10 (S686) and receives a Connect Ack
message (S688).
[0074] When a call is connected between the MS.sub.O 10 and the
MS.sub.T 50 as above, an audio or a video call is enabled
therebetween (S692).
[0075] While the invention has been shown and described with
respect to the preferred embodiments, it will be understood by
those skilled in the art that various changes and modification may
be made without departing from the spirit and scope of the
invention as defined in the following claims.
INDUSTRIAL APPLICABILITY
[0076] According to the present invention, a mobile communication
network protocol for multimedia transmission between a target
mobile station and a network is established before a called party
receives a call, so that multimedia such as images or moving
pictures may be sent to the target mobile station before the called
party answers the call. In this way, the called party is able to
enjoy a multimedia service before the phone call is connected.
Moreover, if the multimedia is an audio, image, or moving picture
about a calling party, the called party can identify the calling
party based on the multimedia.
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